Open AccessJournal Article
Temperature fields produced by traveling distributed heat sources
Thomas W. Eagar,N. S Tsai +1 more
Reads0
Chats0
TLDR
The solution of a traveling distributed heat source on a semi-infinite plate provides information about both the size and the shape of arc weld pools as mentioned in this paper, and the results indicate that both welding process variables (current, arc length and travel speed) and material parameters (thermal diffusivity) have significant effects on weld shape.Abstract:
The solution of a traveling distributed heat source on a semi-infinite plate provides information about both the size and the shape of arc weld pools. The results indicate that both welding process variables (current, arc length and travel speed) and material parameters (thermal diffusivity) have significant effects on weld shape. The theoretical predictions are compared with experimental results on carbon steels, stainless steel, titanium and aluminum with good agreement. 25 references, 23 figures, 1 table.read more
Citations
More filters
Proceedings ArticleDOI
Development of a welding process model for H/sup /spl infin//-control design
M. Zeren,Hitay Özbay,J. Yang +2 more
TL;DR: In this paper, the authors developed a dynamical input/output model of a gas tungsten arc welding process for H/sup /spl infin//-control design.
High-throughput Alloy and Process Design for Metal Additive Manufacturing
Sofia Sheikh,Brent Vela,Pejman Honarmandi,Peter Morcos,David Sh. L. Shoukr,Abdelrahman Kotb,Raymundo Arroyave,Ibrahim Karaman,Alaa Elwany +8 more
TL;DR: In this paper , the authors developed a high-throughput computational framework to guide the search for highly printable alloys and appropriate processing parameters, using material properties from state-of-the-art databases, processing parameters and simulated melt pool profiles.
Journal ArticleDOI
A Study on Mathematical Modeling of Parameter Optimization in Gas Tungsten Arc (GTA) Welding of Thin Pipes
Tj Lho,Suck-Joo Na +1 more
TL;DR: In this paper, the optimal process parameter in circumferential welding of thin pipes was estimated to maintain a uniform bead width over the full circumference joint, while the constraints consist of the capacity limit of power source and related equipments.
Journal ArticleDOI
Improving the prediction accuracy of thermal finite element analysis for laser welding through an automated optimization method
Jiajun Xu,Youmin Rong +1 more
References
More filters
Journal ArticleDOI
Heat treating and melting material with a scanning laser or electron beam
H. E. Cline,T. R. Anthony +1 more
TL;DR: In this paper, a thermal analysis for laser heating and melting materials is derived for a Gaussian source moving at a constant velocity, where the resulting temperature distribution, cooling rate distribution, and depth of melting are related to the laser spot size, velocity, and power level.
Journal ArticleDOI
Heat Intensity and Current Density Distributions at the Anode of High Current, Inert Gas Arcs
TL;DR: In this article, heat and current distributions at the anode of high current arcs in inert gas atmospheres were determined experimentally, and the experimental method consisted of splitting anode, measuring the heat flux and the current to one of the sections as a function of arc position relative to the splitting plane, and calculating therefrom the distribution functions.
Journal ArticleDOI
Analysis of Electrode Phenomena in the High-Current Arc
J. D. Cobine,E. E. Burger +1 more
TL;DR: In this article, the authors made an analysis of the phenomena at the electrodes of a high-current short-time arc and showed that the input power density to the anode spot is in the range 5×104 to 1×106 watts/cm2.
Convection in arc weld pools
TL;DR: In this paper, a mathematical model was developed to account for convection and temperature distributions in stationary arc weld pools driven by buoyancy, electromagnetic and surface tension forces, and it was shown that these forces dominate the flow behavior.
Effect of Selenium on GTAW Fusion Zone Geometry
C.R. Heiple,J.R. Roper +1 more
TL;DR: In this article, small additions of selenium to 21-6-9 stainless steel dramatically increase the depth/width ratio of bead-on-plate welds, which is consistent with a model for control of weld fusion zone geometry.